ISL8014 Ver la hoja de datos (PDF) - Intersil
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ISL8014 Datasheet PDF : 16 Pages
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ISL8014
Typical Operating Performance (Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN,
SYNCH = 0V, L = 1.5µH, C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 4A).
100
100
90
80
2.5VOUT-PWM
1.8VOUT-PWM
70
1.5VOUT-PWM
1.2VOUT-PWM
60
90
80
2.5VOUT-PFM
1.8VOUT-PFM 1.5VOUT-PFM 1.2VOUT-PFM
70
60
50
50
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT LOAD (A)
FIGURE 3. EFFICIENCY vs LOAD (1MHz 3.3 VIN PWM)
40
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
OUTPUT LOAD (A)
FIGURE 4. EFFICIENCY vs LOAD (1MHz 3.3 VIN PFM)
100
90
80
2.5VOUT-PWM
1.8VOUT-PWM
1.5VOUT-PWM
70 3.3VOUT-PWM
1.2VOUT-PWM
60
50
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT LOAD (A)
FIGURE 5. EFFICIENCY vs LOAD (1MHz 5VIN PWM)
100
90
80
70
2.5VOUT-PFM 1.8VOUT-PFM 1.5VOUT-P1F.M2VOUT-PFM
3.3VOUT-PFM
60
50
40
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
OUTPUT LOAD (A)
FIGURE 6. EFFICIENCY vs LOAD (1MHz 5VIN PFM)
2.00
1.75
3.3VIN-PWM
1.50
1.25
1.00
5VIN-PFM
0.75
0.50
0.25
5VIN-PWM
3.3VIN-PFM
0.00
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
OUTPUT LOAD (A)
FIGURE 7. POWER DISSIPATION vs LOAD (1MHz, VOUT = 1.8V)
125
100
75
50
25
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VIN (V)
FIGURE 8. POWER DISSIPATION WITH NO LOAD vs VIN
(PWM VOUT = 1.8V)
7
FN6576.1
December 20, 2007
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